# test the expansion of ${array[@]} and ${array[*]}, both quoted and
# unquoted. the expansions should be exactly analogous to the
# expansions of $@ and $* quoted and unquoted
A=(a b)
recho "${A[*]}"
# If IFS is null, the parameters are joined without separators
IFS=''
recho "${A[*]}"
# If IFS is unset, the parameters are separated by spaces
unset IFS
recho "${A[*]}"
recho "${A[@]}"
recho ${A[@]}
IFS='/'
A=(bob 'tom dick harry' joe)
set ${A[*]}
recho $#
recho $1
recho $2
recho $3
A=(bob 'tom dick harry' joe)
set ${A[*]}
recho $#
recho $1
recho $2
recho $3
A=(bob 'tom dick harry' joe)
set ${A[@]}
recho $#
recho $1
recho $2
recho $3
A=(bob 'tom dick harry' joe)
set ${A[@]}
recho $#
recho $1
recho $2
recho $3
# according to POSIX.2, unquoted $* should expand to multiple words if
# $IFS is null, just like unquoted $@
IFS=''
A=(bob 'tom dick harry' joe)
set "${A[*]}"
recho $#
recho $1
recho $2
recho $3
A=(bob 'tom dick harry' joe)
set ${A[*]}
recho $#
recho $1
recho $2
recho $3
A=(bob 'tom dick harry' joe)
set ${A[@]}
recho $#
recho $1
recho $2
recho $3
# if IFS is unset, the individual positional parameters are split on
# " \t\n" if $* or $@ are unquoted
unset IFS
A=(bob 'tom dick harry' joe)
set ${A[*]}
recho $#
recho $1
recho $2
recho $3
A=(bob 'tom dick harry' joe)
set ${A[@]}
recho $#
recho $1
recho $2
recho $3
# but not for "$@" or "$*"
A=(bob 'tom dick harry' joe)
set "${A[*]}"
recho $#
recho $1
recho $2
recho $3
A=(bob 'tom dick harry' joe)
set "${A[@]}"
recho $#
recho $1
recho $2
recho $3
# these should both expand the value of A to multiple words
A=(a b c d e)
IFS=""
recho ${A[@]}
recho "${A[@]}"
# this example is straight from the POSIX.2 rationale and adapted to arrays
A=(foo bar bam)
recho "${A[@]}"
recho "${A[*]}"
unset IFS
recho "${A[@]}"
recho ${A[@]}
recho "${A[*]}"